Jurors deliberated for about an hour Thursday before sentencing a 27-year-old Grand Prairie woman to 40 years in prison on each of three cases of aggravated robbery.

Desiree Satterwhite, whose sentences will run concurrently, must serve 20 years before she becomes eligible for parole.

Satterwhite was accused of helping her boyfriend hold up several businesses over 12 days in April 2012, a news release from the Tarrant County district attorney’s office said. Satterwhite’s boyfriend, Charles Camp, was sentenced to life last year, the release said.

During the trial this week in state District Judge Everett Young’s court, prosecutors Lisa Callaghan, Colin McLaughlin and Vincent Giardino presented evidence that Camp and Satterwhite robbed three businesses in Fort Worth and Arlington from April 1 to April 6, 2012.

Satterwhite would enter the businesses, find out whether the clerk was alone and map the layout, the release said. After getting the go-ahead, Camp would enter and point a gun at the clerk and demand cash from the register, the release said. Satterwhite and Camp would then leave in Satterwhite’s vehicle.

Prosecutors presented evidence of other robberies during the trial and played video surveillance footage from almost all of them, the release said.